Examples: Add Win32/Winapi + OpenGL example. (#3218, #5170 and #6086, #2772, #2600, #2359, #2022, #1553)
Removed mulit-viewpot stuff in this commit on master, will be re-added separately.
diff --git a/backends/imgui_impl_win32.cpp b/backends/imgui_impl_win32.cpp
index cfbe3a2..70c29f2 100644
--- a/backends/imgui_impl_win32.cpp
+++ b/backends/imgui_impl_win32.cpp
@@ -114,7 +114,7 @@
}
// Functions
-bool ImGui_ImplWin32_Init(void* hwnd)
+static bool ImGui_ImplWin32_Init(void* hwnd, bool platformHasOwnDC)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
@@ -139,6 +139,7 @@
// Set platform dependent data in viewport
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)hwnd;
+ IM_UNUSED(platformHasOwnDC); // Used in 'docking' branch
// Dynamically load XInput library
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
@@ -164,6 +165,17 @@
return true;
}
+IMGUI_IMPL_API bool ImGui_ImplWin32_Init(void* hwnd)
+{
+ return ImGui_ImplWin32_Init(hwnd, false);
+}
+
+IMGUI_IMPL_API bool ImGui_ImplWin32_InitForOpenGL(void* hwnd)
+{
+ // OpenGL needs CS_OWNDC
+ return ImGui_ImplWin32_Init(hwnd, true);
+}
+
void ImGui_ImplWin32_Shutdown()
{
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
@@ -804,45 +816,3 @@
HMONITOR monitor = ::MonitorFromWindow((HWND)hwnd, MONITOR_DEFAULTTONEAREST);
return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor);
}
-
-//---------------------------------------------------------------------------------------------------------
-// Transparency related helpers (optional)
-//--------------------------------------------------------------------------------------------------------
-
-#if defined(_MSC_VER)
-#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi'
-#endif
-
-// [experimental]
-// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c
-// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW)
-void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd)
-{
- if (!_IsWindowsVistaOrGreater())
- return;
-
- BOOL composition;
- if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition)
- return;
-
- BOOL opaque;
- DWORD color;
- if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque))
- {
- HRGN region = ::CreateRectRgn(0, 0, -1, -1);
- DWM_BLURBEHIND bb = {};
- bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
- bb.hRgnBlur = region;
- bb.fEnable = TRUE;
- ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
- ::DeleteObject(region);
- }
- else
- {
- DWM_BLURBEHIND bb = {};
- bb.dwFlags = DWM_BB_ENABLE;
- ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
- }
-}
-
-//---------------------------------------------------------------------------------------------------------
diff --git a/backends/imgui_impl_win32.h b/backends/imgui_impl_win32.h
index e1d5e4a..ffffdea 100644
--- a/backends/imgui_impl_win32.h
+++ b/backends/imgui_impl_win32.h
@@ -17,6 +17,7 @@
#include "imgui.h" // IMGUI_IMPL_API
IMGUI_IMPL_API bool ImGui_ImplWin32_Init(void* hwnd);
+IMGUI_IMPL_API bool ImGui_ImplWin32_InitForOpenGL(void* hwnd);
IMGUI_IMPL_API void ImGui_ImplWin32_Shutdown();
IMGUI_IMPL_API void ImGui_ImplWin32_NewFrame();
diff --git a/examples/example_win32_opengl3/build_win32.bat b/examples/example_win32_opengl3/build_win32.bat
new file mode 100644
index 0000000..91cc6be
--- /dev/null
+++ b/examples/example_win32_opengl3/build_win32.bat
@@ -0,0 +1,8 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+@set OUT_DIR=Debug
+@set OUT_EXE=example_win32_opengl3
+@set INCLUDES=/I..\.. /I..\..\backends
+@set SOURCES=main.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\backends\imgui_impl_win32.cpp ..\..\imgui*.cpp
+@set LIBS=opengl32.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% /D UNICODE /D _UNICODE %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%
diff --git a/examples/example_win32_opengl3/example_win32_opengl3.vcxproj b/examples/example_win32_opengl3/example_win32_opengl3.vcxproj
new file mode 100644
index 0000000..49023e3
--- /dev/null
+++ b/examples/example_win32_opengl3/example_win32_opengl3.vcxproj
@@ -0,0 +1,172 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup Label="ProjectConfigurations">
+ <ProjectConfiguration Include="Debug|Win32">
+ <Configuration>Debug</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Debug|x64">
+ <Configuration>Debug</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|Win32">
+ <Configuration>Release</Configuration>
+ <Platform>Win32</Platform>
+ </ProjectConfiguration>
+ <ProjectConfiguration Include="Release|x64">
+ <Configuration>Release</Configuration>
+ <Platform>x64</Platform>
+ </ProjectConfiguration>
+ </ItemGroup>
+ <PropertyGroup Label="Globals">
+ <ProjectGuid>{C624E5FF-D4FE-4D35-9164-B8A91864F98E}</ProjectGuid>
+ <RootNamespace>example_win32_opengl2</RootNamespace>
+ <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <UseDebugLibraries>true</UseDebugLibraries>
+ <CharacterSet>Unicode</CharacterSet>
+ <PlatformToolset>v140</PlatformToolset>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <UseDebugLibraries>true</UseDebugLibraries>
+ <CharacterSet>Unicode</CharacterSet>
+ <PlatformToolset>v140</PlatformToolset>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <UseDebugLibraries>false</UseDebugLibraries>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <CharacterSet>Unicode</CharacterSet>
+ <PlatformToolset>v140</PlatformToolset>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+ <ConfigurationType>Application</ConfigurationType>
+ <UseDebugLibraries>false</UseDebugLibraries>
+ <WholeProgramOptimization>true</WholeProgramOptimization>
+ <CharacterSet>Unicode</CharacterSet>
+ <PlatformToolset>v140</PlatformToolset>
+ </PropertyGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+ <ImportGroup Label="ExtensionSettings">
+ </ImportGroup>
+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+ <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+ </ImportGroup>
+ <PropertyGroup Label="UserMacros" />
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <OutDir>$(ProjectDir)$(Configuration)\</OutDir>
+ <IntDir>$(ProjectDir)$(Configuration)\</IntDir>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+ <OutDir>$(ProjectDir)$(Configuration)\</OutDir>
+ <IntDir>$(ProjectDir)$(Configuration)\</IntDir>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <OutDir>$(ProjectDir)$(Configuration)\</OutDir>
+ <IntDir>$(ProjectDir)$(Configuration)\</IntDir>
+ </PropertyGroup>
+ <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+ <OutDir>$(ProjectDir)$(Configuration)\</OutDir>
+ <IntDir>$(ProjectDir)$(Configuration)\</IntDir>
+ </PropertyGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>..\..;..\..\backends;</AdditionalIncludeDirectories>
+ </ClCompile>
+ <Link>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <SubSystem>Console</SubSystem>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <Optimization>Disabled</Optimization>
+ <AdditionalIncludeDirectories>..\..;..\..\backends;</AdditionalIncludeDirectories>
+ </ClCompile>
+ <Link>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <SubSystem>Console</SubSystem>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <Optimization>MaxSpeed</Optimization>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <AdditionalIncludeDirectories>..\..;..\..\backends;</AdditionalIncludeDirectories>
+ <BufferSecurityCheck>false</BufferSecurityCheck>
+ </ClCompile>
+ <Link>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <SubSystem>Console</SubSystem>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+ <ClCompile>
+ <WarningLevel>Level4</WarningLevel>
+ <Optimization>MaxSpeed</Optimization>
+ <FunctionLevelLinking>true</FunctionLevelLinking>
+ <IntrinsicFunctions>true</IntrinsicFunctions>
+ <AdditionalIncludeDirectories>..\..;..\..\backends;</AdditionalIncludeDirectories>
+ <BufferSecurityCheck>false</BufferSecurityCheck>
+ </ClCompile>
+ <Link>
+ <GenerateDebugInformation>true</GenerateDebugInformation>
+ <EnableCOMDATFolding>true</EnableCOMDATFolding>
+ <OptimizeReferences>true</OptimizeReferences>
+ <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+ <AdditionalDependencies>opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <SubSystem>Console</SubSystem>
+ </Link>
+ </ItemDefinitionGroup>
+ <ItemGroup>
+ <ClCompile Include="..\..\imgui.cpp" />
+ <ClCompile Include="..\..\imgui_demo.cpp" />
+ <ClCompile Include="..\..\imgui_draw.cpp" />
+ <ClCompile Include="..\..\imgui_tables.cpp" />
+ <ClCompile Include="..\..\imgui_widgets.cpp" />
+ <ClCompile Include="..\..\backends\imgui_impl_opengl3.cpp" />
+ <ClCompile Include="..\..\backends\imgui_impl_win32.cpp" />
+ <ClCompile Include="main.cpp" />
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include="..\..\imconfig.h" />
+ <ClInclude Include="..\..\imgui.h" />
+ <ClInclude Include="..\..\imgui_internal.h" />
+ <ClInclude Include="..\..\backends\imgui_impl_opengl3.h" />
+ <ClInclude Include="..\..\backends\imgui_impl_opengl3_loader.h" />
+ <ClInclude Include="..\..\backends\imgui_impl_win32.h" />
+ </ItemGroup>
+ <ItemGroup>
+ <None Include="..\..\misc\natvis\imgui.natvis" />
+ <None Include="..\README.txt" />
+ </ItemGroup>
+ <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+ <ImportGroup Label="ExtensionTargets">
+ </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/examples/example_win32_opengl3/example_win32_opengl3.vcxproj.filters b/examples/example_win32_opengl3/example_win32_opengl3.vcxproj.filters
new file mode 100644
index 0000000..47ed299
--- /dev/null
+++ b/examples/example_win32_opengl3/example_win32_opengl3.vcxproj.filters
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <ItemGroup>
+ <Filter Include="sources">
+ <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+ <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+ </Filter>
+ <Filter Include="imgui">
+ <UniqueIdentifier>{a82cba23-9de0-45c2-b1e3-2eb1666702de}</UniqueIdentifier>
+ </Filter>
+ </ItemGroup>
+ <ItemGroup>
+ <ClCompile Include="main.cpp">
+ <Filter>sources</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\imgui.cpp">
+ <Filter>imgui</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\imgui_demo.cpp">
+ <Filter>imgui</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\imgui_draw.cpp">
+ <Filter>imgui</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\imgui_widgets.cpp">
+ <Filter>imgui</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\backends\imgui_impl_win32.cpp">
+ <Filter>sources</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\imgui_tables.cpp">
+ <Filter>imgui</Filter>
+ </ClCompile>
+ <ClCompile Include="..\..\backends\imgui_impl_opengl3.cpp">
+ <Filter>sources</Filter>
+ </ClCompile>
+ </ItemGroup>
+ <ItemGroup>
+ <ClInclude Include="..\..\imconfig.h">
+ <Filter>imgui</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\imgui.h">
+ <Filter>imgui</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\imgui_internal.h">
+ <Filter>imgui</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\backends\imgui_impl_win32.h">
+ <Filter>sources</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\backends\imgui_impl_opengl3.h">
+ <Filter>sources</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\backends\imgui_impl_opengl3_loader.h">
+ <Filter>sources</Filter>
+ </ClInclude>
+ </ItemGroup>
+ <ItemGroup>
+ <None Include="..\README.txt" />
+ <None Include="..\..\misc\natvis\imgui.natvis">
+ <Filter>sources</Filter>
+ </None>
+ </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/examples/example_win32_opengl3/main.cpp b/examples/example_win32_opengl3/main.cpp
new file mode 100644
index 0000000..d351607
--- /dev/null
+++ b/examples/example_win32_opengl3/main.cpp
@@ -0,0 +1,252 @@
+// dear imgui: standalone example application for OpenGL3 with Winapi
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_opengl3.h"
+#include "imgui_impl_win32.h"
+#include <windows.h>
+#include <GL/GL.h>
+#include <tchar.h>
+
+// Data stored per platform window
+struct RendererData
+{
+ HDC hDC;
+};
+
+// Data
+HGLRC g_hRC;
+RendererData g_MainWindow;
+static int g_Width;
+static int g_Height;
+
+// Forward declarations of helper functions
+static bool CreateDeviceOpenGL3(HWND hWnd, RendererData* data);
+static void CleanupDeviceOpenGL3(HWND hWnd, RendererData* data);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+ // Create application window
+ //ImGui_ImplWin32_EnableDpiAwareness();
+ WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_OWNDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+ ::RegisterClassEx(&wc);
+ HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui Winapi+OpenGL3 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+ // Initialize OpenGL3
+ if (!CreateDeviceOpenGL3(hwnd, &g_MainWindow))
+ {
+ CleanupDeviceOpenGL3(hwnd, &g_MainWindow);
+ ::DestroyWindow(hwnd);
+ ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+ return 1;
+ }
+
+ wglMakeCurrent(g_MainWindow.hDC, g_hRC);
+
+ // Show the window
+ ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+ ::UpdateWindow(hwnd);
+
+ // Setup Dear ImGui context
+ IMGUI_CHECKVERSION();
+ ImGui::CreateContext();
+ ImGuiIO& io = ImGui::GetIO(); (void)io;
+ io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
+ io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
+
+ // Setup Dear ImGui style
+ ImGui::StyleColorsDark();
+ //ImGui::StyleColorsClassic();
+
+ // Setup Platform/Renderer bindings
+ ImGui_ImplWin32_InitForOpenGL(hwnd);
+ ImGui_ImplOpenGL3_Init();
+
+ // Load Fonts
+ // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+ // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+ // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+ // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+ // - Read 'docs/FONTS.md' for more instructions and details.
+ // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+ //io.Fonts->AddFontDefault();
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+ //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+ //IM_ASSERT(font != NULL);
+
+ // Our state
+ bool show_demo_window = true;
+ bool show_another_window = false;
+ ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // Main loop
+ MSG msg;
+ ZeroMemory(&msg, sizeof(msg));
+ while (msg.message != WM_QUIT)
+ {
+ // Poll and handle messages (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+ {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ continue;
+ }
+
+ // Start the Dear ImGui frame
+ ImGui_ImplOpenGL3_NewFrame();
+ ImGui_ImplWin32_NewFrame();
+ ImGui::NewFrame();
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ glViewport(0, 0, g_Width, g_Height);
+ glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
+ // you may need to backup/reset/restore current shader using the commented lines below.
+ //GLint last_program;
+ //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+ //glUseProgram(0);
+ ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+ //glUseProgram(last_program);
+
+ SwapBuffers(g_MainWindow.hDC);
+ }
+
+ ImGui_ImplOpenGL3_Shutdown();
+ ImGui_ImplWin32_Shutdown();
+ ImGui::DestroyContext();
+
+ CleanupDeviceOpenGL3(hwnd, &g_MainWindow);
+ wglDeleteContext(g_hRC);
+ ::DestroyWindow(hwnd);
+ ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+ return 0;
+}
+
+static bool ActivateOpenGL3(HWND hWnd)
+{
+ HDC hDc = GetDC(hWnd);
+
+ PIXELFORMATDESCRIPTOR pfd = { 0 };
+
+ pfd.nSize = sizeof(pfd);
+ pfd.nVersion = 1;
+ pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+ pfd.iPixelType = PFD_TYPE_RGBA;
+ pfd.cColorBits = 32;
+
+ int pf = ChoosePixelFormat(hDc, &pfd);
+ if (pf == 0)
+ {
+ return false;
+ }
+
+ if (SetPixelFormat(hDc, pf, &pfd) == FALSE)
+ {
+ return false;
+ }
+
+ ReleaseDC(hWnd, hDc);
+ return true;
+}
+
+// Helper functions
+
+static bool CreateDeviceOpenGL3(HWND hWnd, RendererData* data)
+{
+ if (!ActivateOpenGL3(hWnd))
+ return false;
+
+ data->hDC = GetDC(hWnd);
+
+ if (!g_hRC)
+ {
+ g_hRC = wglCreateContext(data->hDC);
+ }
+
+ return true;
+}
+
+static void CleanupDeviceOpenGL3(HWND hWnd, RendererData* data)
+{
+ wglMakeCurrent(NULL, NULL);
+ ReleaseDC(hWnd, data->hDC);
+}
+
+// Forward declare message handler from imgui_impl_win32.cpp
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Win32 message handler
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+ return true;
+
+ switch (msg)
+ {
+ case WM_SIZE:
+ if (wParam != SIZE_MINIMIZED)
+ {
+ g_Width = LOWORD(lParam);
+ g_Height = HIWORD(lParam);
+ }
+ return 0;
+ case WM_SYSCOMMAND:
+ if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+ return 0;
+ break;
+ case WM_DESTROY:
+ ::PostQuitMessage(0);
+ return 0;
+ }
+ return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}
diff --git a/examples/imgui_examples.sln b/examples/imgui_examples.sln
index 9b442b2..263f8bc 100644
--- a/examples/imgui_examples.sln
+++ b/examples/imgui_examples.sln
@@ -27,6 +27,8 @@
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_sdl2_vulkan", "example_sdl2_vulkan\example_sdl2_vulkan.vcxproj", "{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}"
EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_win32_opengl3", "example_win32_opengl3\example_win32_opengl3.vcxproj", "{C624E5FF-D4FE-4D35-9164-B8A91864F98E}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
@@ -131,6 +133,14 @@
{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}.Release|Win32.Build.0 = Release|Win32
{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}.Release|x64.ActiveCfg = Release|x64
{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}.Release|x64.Build.0 = Release|x64
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Debug|Win32.ActiveCfg = Debug|Win32
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Debug|Win32.Build.0 = Debug|Win32
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Debug|x64.ActiveCfg = Debug|x64
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Debug|x64.Build.0 = Debug|x64
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Release|Win32.ActiveCfg = Release|Win32
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Release|Win32.Build.0 = Release|Win32
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Release|x64.ActiveCfg = Release|x64
+ {C624E5FF-D4FE-4D35-9164-B8A91864F98E}.Release|x64.Build.0 = Release|x64
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
